package task06_05;

/**
 * Create by IntelliJ IDEA
 *
 * @author: jsonor
 * @date-Time: 2018/4/8 10:32
 * @description:
 */
public class RectangleDemo {

  public static void main(String[] args) {
    Rectangle r1 = new Rectangle(4,5);
   r1.circumference();
   int a=r1.area();
    System.out.println("面积是："+a);
  }

}
